Perhaps you should try some spelling variations:
dan nang » da nang, van nang, dai nang
nang doi » nang doc, nang noi, hang doi
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cac tuc » cac toc, cac tu, cac tac
tuc dan » thuc dan, thuc day, tung dan
sac ky » cac ky, sai ky
ve cac » va cac, vien cac
doi va » hoi va, noi va, dai va
thiet » thieu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach y) or (sac ky)) lang xa hoi. hieu ve cac tuc dan nang doi va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach y) OR (sac ky)) lang xa hoi. hieu ve cac tuc dan nang doi va thiet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach y) or (sac ky)) lang xa hoi. hieu ve cac tuc dan nang doi va thiet*.